Win a chance to hang out with Oscar winners Ben Affleck and Matt Damon and help raise money for their charities. / Omaze.com

by Maria Puente, USA TODAY

by Maria Puente, USA TODAY

The celebrity charity bandwagon rolls on: George Clooney is auctioning a date with his handsome self for his charity; now his pals Ben Affleck and Matt Damon are doing the same to raise money for their favorite causes.

It's happening on Omaze.com where celeb philanthropists and their admirers come together through the online auction of "experiences."

Affleck and Damon are offering a chance to hang out with them in Hollywood, for a $10 donation. The winner of the drawing, plus one, will be flown to Los Angeles to spend the day with the two Oscar winners at an exclusive Hollywood event and learn what it's like to be..well, Ben Affleck and Matt Damon.

Jokes from the stars are included. "It's great to be working with Matt again," Affleck said in a statement on the site. "It was a little awkward after he didn't get the Robin role, so we couldn't be more excited."

"Yeah, that was tough, but I still have the costume from my audition, so I'm hoping I can wear it when we meet the winners," added Damon.

Proceeds will go to the Eastern Congo Initiative, which seeks to foster economic and social development in Congo, and Water.org, which helps communities in the developing world have access to safe water and sanitation.

Enter by Feb. 18 for a chance to hang out with the duo on Feb. 22.

The date-with-Clooney auction ends tonight and the date takes place Feb. 4, a few days before the opening of his latest movie, The Monuments Men. Proceeds are to go to the Satellite Sentinel Project, which deploys satellite imagery and analysis to monitor the border between war torn Sudan and South Sudan to detect, deter and document war crimes.

The date includes a trip to New York for the premier, backstage at Late Show with David Letterman where Clooney will promote the movie, a ride to the premiere and a stroll down the red carpet with him, VIP seating at the premier, plus an invite to the after-party as Clooney's guests.